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path: root/drivers/net/sk98lin/uboot_skb.c
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Diffstat (limited to 'drivers/net/sk98lin/uboot_skb.c')
-rw-r--r--drivers/net/sk98lin/uboot_skb.c122
1 files changed, 122 insertions, 0 deletions
diff --git a/drivers/net/sk98lin/uboot_skb.c b/drivers/net/sk98lin/uboot_skb.c
new file mode 100644
index 0000000..3a487a8
--- /dev/null
+++ b/drivers/net/sk98lin/uboot_skb.c
@@ -0,0 +1,122 @@
+/*
+ * Definitions for the 'struct sk_buff' memory handlers in U-Boot.
+ *
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+
+#ifdef CONFIG_SK98
+
+#include <common.h>
+#include "u-boot_compat.h"
+
+#define MAX_SKB 50
+
+static struct sk_buff *sk_table[MAX_SKB];
+
+
+struct sk_buff * alloc_skb(u32 size, int dummy)
+{
+ int i;
+ struct sk_buff * ret = NULL;
+
+ for (i = 0; i < MAX_SKB; i++)
+ {
+ if (sk_table[i])
+ {
+ /* Already allocated.
+ */
+ continue;
+ }
+
+ sk_table[i] = malloc(sizeof(struct sk_buff));
+ if (! sk_table[i])
+ {
+ printf("alloc_skb: malloc failed\n");
+ break;
+ }
+
+ memset(sk_table[i], 0, sizeof(struct sk_buff));
+ sk_table[i]->data = sk_table[i]->data_unaligned =
+ malloc(size + 16);
+ if (! sk_table[i]->data)
+ {
+ printf("alloc_skb: malloc failed\n");
+ free(sk_table[i]);
+ sk_table[i] = NULL;
+ break;
+ }
+
+ sk_table[i]->data += 16 - ((u32)sk_table[i]->data & 15);
+ sk_table[i]->len = size;
+
+ break;
+ }
+
+ if (i < MAX_SKB)
+ {
+ ret = sk_table[i];
+ }
+
+ if (! ret)
+ {
+ printf("Unable to allocate skb!\n");
+ }
+
+ return ret;
+}
+
+void dev_kfree_skb_any(struct sk_buff *skb)
+{
+ int i;
+
+ for (i = 0; i < MAX_SKB; i++)
+ {
+ if (sk_table[i] != skb)
+ {
+ continue;
+ }
+
+ free(skb->data_unaligned);
+ free(skb);
+ sk_table[i] = NULL;
+ break;
+ }
+
+ if (i == MAX_SKB)
+ {
+ printf("SKB allocation error!\n");
+ }
+}
+
+void skb_reserve(struct sk_buff *skb, unsigned int len)
+{
+ skb->data+=len;
+}
+
+void skb_put(struct sk_buff *skb, unsigned int len)
+{
+ skb->len+=len;
+}
+
+#endif /* CONFIG_SK98 */